Bachelor in Geology from Universidade Federal do Rio Grande do Norte (1995) and doctorate in Geophysics from Universidade de São Paulo (1999). He is currently full professor at Universidade de São Paulo. Has experience in Geosciences, focusing on Rock Magnetism, Paleomagnetism and Archeomagnetism. Main research topics are paleoenvironmental changes through Earth's history, particularly the Precambrian-Cambrian boundary, the major biotic crisis in the Phanerozoic and the recent variations of the Earth's magnetic field. Is a full member of the Brazilian Academy of Sciences. (Source: Lattes Curriculum)
| Articles published in Pesquisa FAPESP Magazine about the researcher: |
| Gas from an ancient sea |
| El gas del antiguo mar del sertón |
| El norte en cuestión |
| Gusanos nada insignificantes |
| Polarized opinion |
| Memorias magnéticas de las misiones jesuíticas |
| Magnetic memories of the Jesuit missions |
| The magnetic history of Brazil |
| La historia magnética de Brasil |
| News published in Agência FAPESP Newsletter about the researcher |
| TITULO |
| Articles published in other media outlets (0 total): |
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| VEICULO: TITULO (DATA) |
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This project aims to study key Precambrian microbiotas, from different stratigraphies and ages within the Proterozoic of Brazil, using nano-imaging techniques. We plan to analyse both microbialites and microfossils to constrain what kind of biosignatures can provide elemental information such as elements distributions and concentrations with interpretable biological significance to be cor…
This Institutional Technical Reserve (RTI), in the amount of R$1,040,000.00, corresponds to the IAG portion of several projects coordinated by IAG professors. Its use was discussed by the group of professors in the Collegiate and in the three Departments and will contemplate the new CPD, central aspect of the proposal of use of the RTI of the previous year, and urgent needs of general inf…
The objective of the proposed work is to move forward our understanding of the evolutionary adaptations of early life to the increasing atmospheric oxygen concentration. Our aim is to characterize the evolving biosphere and the changing environments across the 2.45 to 2.32 Ga old Great Oxidation Event and the ~0.8 to 0.54 Ga old Neoproterozoic Oxidation Event. To achieve this goal, we wil…
The proposal concerns paleomagnetic and rock magnetic studies on Ediacaran successions (600-542 Ma) form the Rio de La Plata craton in order to better constrain its paleogeographic evolution and its relation with South American and African cratons during the West Gondwana assembly. (AU)
A visiting fellowship to Prof. Augusto Rapailini, from Instituto de Geociências, Universidade de Buenos Aires (IGEBA) is requested for 6 months to foster scientific cooperation between the IAG and the IGEBA. The research plan has two main objectives: (1) paleomagnetic studies of Ediacaran successions from Rio de la Plata Craton, which are part of a FAPESP-SPRINT project signed last year; …
This RTI, in the amount of R $ 1,333,761.00, corresponds to the portion of the IAG of the project of the GMT Telescope realized by several institutions of the State of São Paulo. It is proposed to complete the implantation of the Integrated Laboratories of the IAG (Electronics and Optics Laboratories, of general use of the Institute) initiated with the RTI of 2015, in addition to meeting …
(Only some records are available in English at this moment)
The terrestrial magnetic field presents rapid variations, both in its direction and (declination and slope), and in its intensity. These variations are recorded currently in observatories around the globe and also by satellites. For periods prior to the last two centuries, the investigation of the magnetic field is carried out indirectly, from its record in archaeological materials, sedim…
The onset of modern plate tectonics, involving subduction and mountain uplift, is a key event triggering the emergence of large continental masses and an oxygen-rich atmosphere, setting the stage for the origin of complex life. But when and how plate tectonics started is still unknown owing partially to the inherent difficulty in studying events that occurred in deep time. The paleomagnet…
Paleomagnetism is the main tool used in paleogeographic reconstructions, in which directional information of the past magnetic field is retrieved from ferromagnetic grains (l.s). Magnetic minerals have a wide range of size and composition that influence their magnetic properties and, consequently, their ability to record the directions of paleomagnetic fields. The signals obtained with cl…
(Only some records are available in English at this moment)
The onset of plate tectonics and the geomagnetic field likely occurred in the Archean. These two aspects of the early Earth history can be assessed by the paleomagnetic study of Archean rocks. Notwithstanding, only few targets are presently available for this kind of study on the planet's surface which did not experience intense deformation and metamorphism. In this project we will study …
Plutons classically recognized as post-tectonic are erroneously associated with bodies free of any deformation and thus treated as isotropic. There are numerous mechanisms that are able to deform such rocks without involving tectonic efforts, such as the weight of the intrusive body itself that in certain circumstances may cause movement and consequently deformation, is imprinted on both …
We know little about the relative roles of environmental and biological factors involved in the late Neoproterozoic events leading to the ultimate oxygenation of the ocean-atmosphere system and dawn of biological complexity. The project will examine the Physiology, Ecology and developmental behavior of several groups of metazoans to test hypothesized connections between changes in ocean r…
(Only some records are available in English at this moment)
The Neoproterozoic is one of the most critical periods in Earth's history, where great evolutionary leaps took place in the biosphere, marked oscillations in climate and ocean chemistry, and a generalized reorganization in the positioning of continental masses. These processes are generally associated with feedback mechanisms between Earth's Systems (biosphere, climate and tectonics), how…
The Bocaina Formation crops out in the state of Mato Grosso do Sul, SW Brazil, beneath the black limestones and shales of the Tamengo Formation where the important biomineralizers Corumbella and Cloudina are found (> 542 Ma). Zircons from interbedded tuffs from the upper part of the Bocaina Formation were dated at 555.18 ± 0.30 Ma (ID-TIMS U-Pb). Both formations are part of the Ediacaran …
The latitudinal distribution of continental masses and mountain chains is a key element in the paleoenvironmental reconstruction of the Ediacaran-Cambrian times. However, there is a scant paleomagnetic database for this time interval, and the few poles available for the same age shows high dispersion between them, and overall cannot be correlated. Besides the unconstrained latitude of the…
Magnetic enhancement in soils depends on water availability and its evolution through time. In karst environment these changes depend on the amount of rainfall and water transport in the aquifer system activated by the recharge (mainly storm events). Recent work has shown that magnetic minerals present in stalagmites are usually originated in the soil and sediments above the cave and are …
(Only some records are available in English at this moment)
| 3 / 3 | Ongoing research grants |
| 9 / 8 | Completed research grants |
| 5 / 5 | Ongoing scholarships in Brazil |
| 30 / 16 | Completed scholarships in Brazil |
| 1 / 1 | Ongoing scholarships abroad |
| 9 / 8 | Completed scholarships abroad |
| 57 / 41 | All research grants and scholarships |
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CV Lattes
ORCID